David Roberts

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Lewisport, CA

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Patents Grantslast 30 patents

Information Patent Grant
Removal of contaminants from water and gas by filtration
- Patent number 8,308,851
- Issue date Nov 13, 2012
- David Roberts
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Methods for removal of oil and other contaminants from water
- Patent number 7,597,809
- Issue date Oct 6, 2009
- David Roberts
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Patents Applicationslast 30 patents

Information Patent Application
Removal of Contaminants from Water and Gas by Filtration
- Publication number 20100096342
- Publication date Apr 22, 2010
- David Roberts
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL